1. OD Scarfing Tool and OD scarfing ring Rules of Thumb:
   1. When OD tube scarfing, it is best to scarf the unwanted weld bead from the tube as close to the weld zone as possible. The hotter the weld bead, the easier it is for the OD scarfing tool to cut.
   2. When placing your scarfing tool closer to the weld zone, the least load is applied to the scarfing tool and scarfing tool holder. This will allow the OD scarfing tool or OD scarfing ring to provide you with a smoother and more desirable finish.
2. If you experience premature OD scarfing tool wear and poor tube scarfing quality:
   1. Are you using the scarfing tool holder closest to the weld squeeze point?
   2. If you are OD scarfing small diameter tube, are you supporting the tube with a support pad?
   3. If you are OD scarfing large diameter tube, it is best to use support rollers to support the tube.

Hot Scarf

Double tool holder location